Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/35—Heterocyclic compounds
  • D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
  • C07D211/92—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with a hetero atom directly attached to the ring nitrogen atom
  • C07D211/94—Oxygen atom, e.g. piperidine N-oxide
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/16—Nitrogen-containing compounds
  • C08K5/34—Heterocyclic compounds having nitrogen in the ring
  • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
  • C08K5/3432—Six-membered rings
  • C08K5/3435—Piperidines

Definitions

• the present invention relates to a process for the photochemical and thermal stabilization of polyamide fibers which can be colored with acidic and basic dyes and their mixtures with one another and with other fibers, a means for carrying out the process and the fiber materials treated therewith.
• Undyed and textile-refined polyamide fiber material and basic dyeable polyamide, as well as their mixtures with one another and with other fibers, as well as the dyeings of these substrates, are damaged by the action of light and especially with simultaneous heat radiation.
• the photochemical stability of these fibers, which are dyed with selected dyes, for example in the interior of automobiles, is not sufficient.
• light stabilizers are preferably of interest where the use of metal-containing compounds is undesirable, e.g. for modified PA fibers, but especially for fiber blends or fiber constructions of polyamide with polypropylene or the various polyurethane fibers.
• the present invention thus relates to a process for the photochemical and thermal stabilization of polyamide fibers which can be colored with acidic and basic dyes and their mixtures with one another and with other fibers, which is characterized in that the fiber material is mixed with an aqueous liquor containing a light stabilizer from the class of sterically hindered amines, treated.
• a sterically hindered amine which has at least one group of the formula I in its molecule is used as the light stabilizer to be used according to the invention contains where R is hydrogen or methyl.
• Such light stabilizers can be low molecular weight (MW ⁇ 700) or higher molecular weight (oligomers, polymers). These groups preferably carry one or two polar substituents in the 4-position or a polar spiro ring system is bonded to the 4-position.
• n is a number from 1 to 4, preferably 1 or 2
• R represents hydrogen or methyl
• R1 is hydrogen, hydroxy, C1-C12-alkyl, C3-C8-alkenyl, C3-C8-alkynyl, C7-C12-aralkyl, C1-C8-alkanoyl, C3-C5-alkenoyl, glycidyl, -O-C1-C12- Alkyl, -O-C1-C8-alkanoyl or a group -CH2CH (OH) -Z, where Z is hydrogen, methyl or phenyl, where R1 is preferably hydrogen, C1-C4-alkyl, allyl, benzyl, acetyl or acryloyl is and R2, when n is 1, hydrogen, optionally interrupted by one or more oxygen atoms C1-C18-alkyl,
• substituents are C1-C12-alkyl, they represent e.g. Methyl, ethyl, n-propyl, n-butyl, sec-butyl, tert-butyl, n-hexyl, n-octyl, 2-ethyl-hexyl, n-nonyl, n-decyl, n-undecyl or n- Dodecyl.
• R1 or R2 can represent, for example, the groups mentioned above and, for example, n-tridecyl, n-tetradecyl, n-hexadecyl or n-octadecyl.
• R1 is C3-C8-alkenyl, it can e.g. are 1-propenyl, allyl, methallyl, 2-butenyl, 2-pentenyl, 2-hexenyl, 2-octenyl, 4-tert-butyl-2-butenyl.
• R1 is as C3-C8 alkynyl preferably propargyl.
• C7-C12 aralkyl R1 is especially phenethyl and especially benzyl.
• R1 is as C1-C8-alkanoyl for example formyl, propionyl, butyryl, octanoyl, but preferably acetyl and as C3-C5-alkenoyl in particular acryloyl.
• R2 is a monovalent radical of a carboxylic acid, it is, for example, acetic, caproic, stearic, acrylic, methacrylic, benzoic or ⁇ - (3,5-di-tert-butyl-4-hydroxyphenyl) - propionic acid residue.
• R2 is a divalent residue of a dicarboxylic acid, it represents, for example, malonic, succinic, glutaric, adipic, suberic, sebacic, maleic, phthalic, dibutylmalonic, dibenzylmalonic, butyl (3,5- di-tert-butyl-4-hydroxybenzyl) -malonic acid or bicycloheptenedicarboxylic acid residue.
• R2 represents a trivalent carboxylic acid residue, it means e.g. a trimellitic acid or nitrilotriacetic acid residue.
• R2 represents a tetravalent residue of a tetracarboxylic acid, it means e.g. the tetravalent residue of butane-1,2,3,4-tetracarboxylic acid or of pyromellitic acid.
• R2 is a divalent radical of a dicarbamic acid, it is, for example, a hexamethylene dicarbamic acid or a 2,4-tolylene dicarbamic acid radical.
• R3 is hydrogen, C1-C12-alkyl, C2-C5-hydroxyalkyl, C5-C7-cycloalkyl, C7-C8-aralkyl, C2-C18-alkanoyl, C3-C5-alkenoyl or benzoyl and R4 when n is 1, hydrogen, C1-C18-alkyl, C3-C8-alkenyl, C5-C7-cycloalkyl, C1-C4-alkyl, glycidyl substituted with a hydroxy, cyano, alkoxycarbonyl or carbamide group, a group the formula -CH2-CH (OH) -Z or the formula -CONH-Z, wherein Z is hydrogen, methyl or phenyl; when n is 2, C2-C12-alkylene, C6-C12-arylene, xyly
• any substituents are C5-C7-cycloalkyl, they represent in particular cyclohexyl.
• R3 is especially phenylethyl or especially benzyl.
• R3 is in particular 2-hydroxyethyl or 2-hydroxypropyl.
• R3 is as C2-C18 alkanoyl, for example propionyl, butyryl, octanoyl, dodecanoyl, hexadecanoyl, octadecanoyl, but preferably acetyl and as C3-C5-alkenoyl, in particular acryloyl.
• R4 is C2-C8-alkenyl, then it is e.g. allyl, methallyl, 2-butenyl, 2-pentenyl, 2-hexenyl or 2-octenyl.
• R4 as a C1-C4-alkyl substituted with a hydroxy, cyano, alkoxycarbonyl or carbamide group can e.g. 2-Hydroxyethyl, 2-hydroxypropyl, 2-cyanoethyl, methoxycarbonylmethyl, 2-ethoxycarbonylethyl, 2-aminocarbonylpropyl or 2- (dimethylaminocarbonyl) ethyl.
• substituents are C2-C12 alkylene, they are e.g. around ethylene, propylene, 2,2-dimethylpropylene, tetramethylene, hexamethylene, octamethylene, decamethylene or dodecamethylene.
• substituents are C6-C15 arylene, they represent e.g. o-, m- or p-phenylene, 1,4-naphthylene or 4,4'-diphenylene.
• D is especially cyclohexylene.
• R1 is hydrogen, oxyl-oxygen, C1-C12-alkyl, C3-C7-alkenyl, C7-C11-phenylalkyl, cyanomethyl, C2-C18-alkanoyl or C3-C18-alkenoyl, a group -CON (R2) (R3) or a group -CH2-CH (R4) -OH, wherein R2 is C1-C12 alkyl, allyl, cyclohexyl, benzyl, phenyl or C7-C12 alkylphenyl and R3 is hydrogen, C1-C12-alkyl, allyl or benzyl or R2 and R3 together with the H atom to which they are attached form a 5 or 6-membered heterocyclic ring, and R4 is hydrogen, C1-C12-alkyl, phenyl, C2-C13-alkoxymethyl or phenoxymethyl, X is hydrogen, C1-C12-alky
• the substituents R1, R2, R4, R5, R6, R8, R9 and R10 as alkyl can be unbranched or branched alkyl, preferably unbranched.
• alkyl groups are methyl, ethyl, propyl, butyl, sec-butyl, n-hexyl, n-octyl, 2-ethylhexyl, n-decyl or n-dodecyl.
• R1, R5, R6, R8 and R9 as alkenyl can mean unbranched or branched alkenyl, such as e.g. Allyl, methallyl, 2-butenyl-1, 2-methyl-2-butenyl-1 or 2-hexenyl-1, allyl being preferred.
• R9 as cycloalkyl can e.g. Cyclopentyl, cyclohexyl, 4-methylcyclohexyl, cycloheptyl or cyclooctyl, with cyclohexyl being preferred.
• R1, R9 and R10 as phenylalkyl can e.g. Butyl, 1-phenylethyl, 2-phenylethyl, 3-phenylpropyl or 3-phenylbutyl, with benzyl being preferred.
• R2, R8 and R9 as alkylphenyl can e.g. 4-tolyl, 2-tolyl, 3,5-dimethylphenyl, 4-ethylphenyl or 4-isopropylphenyl, with 4-tolyl being preferred.
• R 1 as alkanoyl can e.g. Acetyl, propionyl, butyryl, hexanoyl (capronyl), 2-ethylhexanoyl, n-octanoyl (capryloyl), n-decanoyl (caprinoyl), n-dodecanoyl (lauroyl), n-hexadecanoyl (palmitoyl) or n-octadroanyl (st .
• R1 as alkenoyl can e.g. Acryloyl, methacryloyl, crotonyl, vinyl acetyl or oleyl.
• R4 as alkoxymethyl can be, for example, methoxy, ethoxy, butoxy, hexyloxy, octyloxy or dodecycloxymethyl.
• R5 and R9 as alkoxyalkyl can e.g. 2-methoxyethyl, 2-ethoxyethyl, 2-isopropoxyethyl, 2-butoxyethyl, 2-methoxypropyl, 4-methoxybutyl, 3-butoxypropyl or 2-octyloxyethyl.
• R5 and R9 as alkenoxyalkyl can e.g. 2-allyloxyethyl, 2-methallyloxypropyl or 3-allyloxypropyl.
• R5 as dialkylaminoalkyl can in particular be dialkylaminopropyl, e.g. 3-dimethylamino, 3-diethylamino or 3-diisopropylaminopropyl.
• R7 as alkylene or alkylene interrupted by -O- or -N (R6) - e.g. 1,2-ethylene, 1,3-propylene, 1,4-butylene, 1,6-hexylene, 1,8-octylene, 2,4-dimethyl-1,6-hexylene, 1,12-dodecylene, 4- Oxaheptylene-1,7,4- (methylaza) -heptylene-1,7 or 4,8-diazaundecylene-1,11.
• R7 as cycloalkylene or cycloalkylene dialkylene can e.g. 1,4-cyclohexylene, 1,5-cyclooctylene, 1,4-dimethylenecyclohexane or 3,3-dimethyl-5-methylenecyclohexyl.
• R2 and R3 and R9 and R10 together with the N atom to which they are attached can form a heterocyclic ring, e.g. a pyrrolidine, piperidine, morpholine or 4-methylpiperazine ring.
• a heterocyclic ring e.g. a pyrrolidine, piperidine, morpholine or 4-methylpiperazine ring.
• Examples of compounds of the formula (IV) are: 2,4-bis [N- (2,2,6,6-tetramethylpiperidyl-4) butylamino] -6-allylamino-1,3,5-triazine, m.p. 101-103 ° C. N, N'-bis [2,4-bis (diallylamino) -1,3,5-triazinyl-6] -N, N'-bis (2,2,6,6-tetramethylpiperidyl-4) -hexylmethylene diamine, mp . 124-125 ° C.
• the compounds of formula (II) and (III) are known, e.g. from US-A-3 840 494, 3 640 928 and 3 993 655 and can be prepared by the processes described therein.
• the compounds of the formula (IV) can be prepared analogously to the process of US Pat. No. 3,925,376. Thereafter, cyanuric chloride is reacted in stages with the components AH, BH and a 4-hydroxy- or 4-amino-2,2,6,6-tetramethylpiperidine. The introduction of the substituent R 1 onto the piperidine nitrogen can take place before or after the reaction with the halotriazine.
• the compounds of the formulas (I) to (IV) are expediently used as emulsions or finely divided dispersions which are obtained by grinding or in the presence of nonionic or anionic dispersants.
• Suitable nonionic dispersants are alcohol or alkylphenolalkylene oxide reaction products, e.g. Alkylene oxide reaction products of aliphatic alcohols with 4 to 22 carbon atoms, which contain up to 80 moles of ethylene oxide and / or propylene oxide added.
• the alcohols can preferably contain 4 to 18 carbon atoms, they can be saturated, branched or straight-chain and can be used alone or in a mixture. Branched chain alcohols are preferred.
• Natural alcohols e.g. Myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, arachidyl alcohol or behenyl alcohol or synthetic alcohols, such as in particular butanol, 2-ethylhexanol, amyl alcohol, n-hexanol, furthermore triethylhexanol, trimethylnonyl alcohol or mixtures of higher fatty alcohols. These are linear primary alcohols.
• Preferred ethylene oxide-alcohol reaction products can, for example, by the formula R3O (CH2CH2O) s H are represented, wherein R3 is a saturated or unsaturated hydrocarbon residue, preferably an alkyl or alkenyl residue with 8 to 18 carbon atoms and s is an integer from 1 to 80, preferably from 1 to 30.
• R3 is a saturated or unsaturated hydrocarbon residue, preferably an alkyl or alkenyl residue with 8 to 18 carbon atoms and s is an integer from 1 to 80, preferably from 1 to 30.
• Suitable nonionic dispersants are reaction products of ethylene oxide and / or 1,2-propylene oxide and alkylphenols having 4 to 12 carbon atoms in the alkyl part, it being possible for the phenol to contain one or more alkyl substituents.
• R is hydrogen or at most one of the two radicals R methyl
• p is a number from 4 to 12, preferably 8 to 9
• t is a number from 1 to 60, in particular from 1 to 20 and preferably 1 to 6.
• these alcohol-alkylphenol-ethylene oxide / 1,2-propylene oxide adducts may contain even smaller proportions of block polymers from the alkylene oxides mentioned.
• reaction products which can be considered as nonionic dispersants are polyoxyethylene derivatives of the fatty acid esters of sorbitan ethers with 4 moles of polyethylene glycol, for example the laurate, palmitate, stearate, tristearate, oleate and trioleate of the ethers mentioned, such as the Tween brands of the Atlas Chemicals Division.
• the tristearate of the ether of sorbitan with 4 mol of the polyethylene glycol of the formula is preferred H (CH2CH2) 65OH.
• Esteric alkylene oxide adducts such as e.g. addition products of alkylene oxides, especially ethylene oxide and / or propylene oxide, containing acidic ester groups of inorganic or organic acids, onto aliphatic organic hydroxyl, carboxyl, and optionally also amino or amido compounds or mixtures of these compounds, which have a total of at least 8 carbon atoms.
• acidic esters can be used as free acids or as salts, e.g. Alkali metal, alkaline earth metal, ammonium or amine salts are present.
• anionic dispersants are prepared by known methods by adding at least 1 mole, preferably more than 1 mole, for example 2 to 60 moles of ethylene oxide or alternately in any order of ethylene oxide and propylene oxide to the organic compounds mentioned and then etherifying or esterifying the addition products and optionally the ethers or the esters are converted into their salts.
• the starting materials are, for example, higher fatty alcohols, ie alkanols or alkenols with 8 to 22 carbon atoms, alicyclic alcohols, phenylphenols, alkylphenols with one or more alkyl substituents which together have at least 10 carbon atoms or fatty acids with 8 to 22 carbon atoms.
• Particularly suitable anionic dispersants correspond to the formula wherein R1 is an aliphatic hydrocarbon radical with 8 to 22 carbon atoms or a cycloaliphatic, aromatic or aliphatic-aromatic hydrocarbon radical with 10 to 22 carbon atoms, R2 is hydrogen or methyl, A -O- or - -O, Q is the acid residue of an inorganic, oxygen-containing acid, the acid residue of a polybasic carboxylic acid or a carboxylalkyl residue and n is a number from 1 to 50.
• the radical R1-A- in the compounds of formula (V) derives e.g. from higher alcohols such as decyl, lauryl, tridecyl, myristyl, cetyl, stearyl, oleyl, arachidyl or behenyl alcohol; alicyclic alcohols such as hydroabietyl alcohol; of fatty acids, such as caprylic, capric, lauric, myristic, palmitic, stearic, arachine, behen, coconut oil (C8-C18), decene, dodecene, tetradecene, hexadecene, oil , Linoleic, linolenic, eicotonic, docosonic or clupanodonic acid; of alkylphenols such as butyl, hexyl, n-octyl, n-nonyl, p-tert.
• higher alcohols such as decyl, la
• Residues having 10 to 18 carbon atoms are preferred, in particular those which are derived from the alkylphenols.
• the acid residue Q is usually the acid residue of a polybasic, especially low molecular weight mono- or dicarboxylic acid, such as maleic acid, malonic acid, succinic acid or sulfosuccinic acid, or is a carboxyalkyl residue, especially a carboxymethyl residue (derived in particular from chloroacetic acid) and is an ether or ester bridge with the rest R1-A- (CH2CHR1O) m - connected.
• Q is derived from inorganic polybasic acids such as orthophosphoric acid and sulfuric acid.
• the acid residue X is preferably in salt form, ie, for example, as an alkali metal, ammonium or amine salt.
• alkylene oxide units ( ⁇ CH2CHR2O) ⁇ of the formula (v) are generally ethylene oxide and 1,2-propylene oxide units, the latter preferably being in a mixture with ethylene oxide units in the compounds of the formula (V).
• the anionic compounds of the formula are of particular interest R3O (CH2CH2O) n -X, wherein R3 is a saturated or unsaturated hydrocarbon radical with 8 to 22 hydrocarbon atoms, o-phenylphenol or alkylphenyl with 4 to 12 carbon atoms in the alkyl part, and X and n have the meanings given.
• n is an integer from 1 to 20
• n 1 is an integer from 1 to 10
• X 1 is a sulfuric acid or phosphoric acid residue, which is optionally in salt form and X has the meaning given, particularly preferred.
• dispersants include the known lignin sulfonates, condensation products of naphthalenesulfonic acid and / or naphthol or naphthylamine sulfonic acids with formaldehyde, condensation products of phenolsulfonic acids and / or phenols with formaldehyde and urea into consideration.
• sulfonated condensation products which, by reacting an aromatic compound having at least two replaceable nuclear hydrogen atoms in any order with a compound of the formula where X is the direct bond or oxygen, Hal chlorine or bromine and n2 is 1 to 4 and sulfonation have been obtained.
• sulfonated condensation products preferably correspond to the formula in which X is the direct bond or oxygen, A is the residue of an aromatic compound which is bonded to the methylene group by means of a ring carbon atom, M is hydrogen or a cation, for example alkali metal, alkaline earth metal, ammonium group and n and p each represent a number from 1 to 4 .
• n2 and p are preferably 1 or 2, or they can also be any fractional number from 1 to 4, for example 1.4, 1.8, 2.1 or 3.2.
• Aromatic compounds which have at least two replaceable hydrogen atoms can be mono- or polynuclear, in particular dinuclear, hydrocarbons which are optionally substituted.
• suitable substituents are hydroxyl and alkyl groups with 1 to 4 carbon atoms, alkoxy groups with 1 to 4 carbon atoms or halogen, such as chlorine.
• Naphthalene compounds which can be substituted with hydroxyl, chlorine or methyl are preferred.
• mononuclear and polynuclear aromatic compounds are:
• Alkylbenzenes e.g. Toluene, xylenes, isopropylbenzene, isobutylbenzene, tert.butylbenzene; Phenol, chlorophenols, alkylphenols, e.g. Methylphenol, dimethylphenol, isopropylphenol or tert.butylphenol, hydroxydiphenyls; Alkoxybenzenes, e.g.
• Anisoles phenetols, butoxybenzene, diphenylalkanes, hydroxydiphenylalkanes, tetrahydronaphthalene, naphthalene, ⁇ - and ⁇ -naphthol, alkylnaphthalenes, e.g. ⁇ - and ⁇ -methylnaphthalene, as well as acenaphthene, anthracene, perylene, pyrene, dihydrophenanthrene or phenanthrene.
• Naphthalene which can also be sulfonated, is particularly suitable. Mixtures of these mononuclear and polynuclear aromatic compounds can of course also be used as starting materials.
• the compounds of formula (VI) also required as starting materials are e.g. by reacting diphenyl or diphenyl ether with formaldehyde and hydrogen halide, such as bromine or preferably hydrogen chloride, according to the methods described in U.S. Pat. Patent 3 004 072 or Italian patent 600 214 methods described.
• hydrogen halide such as bromine or preferably hydrogen chloride
• Preferred starting materials of formula (VI) are chloromethyl diphenyl and chloromethyl diphenyl ether. These compounds are mostly mixtures of isomers with 1 to 3 chloromethyl groups, the chloromethyl groups, for example, preferably being in the o- and p-positions of the two benzene rings. Accordingly, the corresponding sulfonated condensation products are generally present as mixtures, in particular of mono- to tri-substituted diphenyl or diphenyl ether products. Depending on the starting materials and the chosen reaction conditions in the production of the condensation products, the ratio of the isomers to one another changes.
• n 1, p-isomers are in proportions 30 to 90% and o-isomers in proportions of, for example, 70 to 10%. If n is 2, p, p'-, o, o'- or o, p'-compounds are obtained, for example.
• emulsifiers used are ethoxylated wax or fatty alcohols, which are optionally wholly or partly esterified with fatty acids, polyalcohols or preferably alkoxylated polyalcohols (for example glycol, diglycol, alkylene or dialkylene glycols, sorbitan, sorbitol, mannitol, xylitol, pentaerythritol, diglycerol , Glycerol and glyceryl sorbitol) which are wholly or partly esterified with fatty acids, optionally ethoxylated sugar derivatives esterified with fatty acids (e.g.
• sucrose or glucose derivatives sucrose or glucose derivatives
• phosphoric acid esters mono-, di- and triesters and their mixtures
• optionally ethoxylated wax or fatty alcohols Fatty acid mono- or dialkanolamides called.
• the starting materials for the emulsifiers used according to the invention are wax or fatty alcohols, e.g. Stearyl, oleyl, cetyl, lanolin, wool fat or wool wax alcohol and as fatty acids e.g. Myristic, palmitic, stearic, isostearic, oleic, linoleic, linolenic or lanolic acid are considered.
• Natural substances e.g.
• zoosterols or phytosterols cationic emulsifiers
• hydrotopic solubilizers e.g. polyalcohol-polyglycol ethers of polyethoxylated fatty acids
• adducts of fatty or wax alcohols and about 10 to 30 moles of ethylene and optionally propylene oxide are also suitable.
• UV absorbers can also be used. All those compounds which are also known as UV absorbers and are described, for example, in Kirk-Othmer 23 , 615-627; AF Strobel, ADR, 50 , (1961), 583-588; 51 (1962) 99-104; R. Gumbleter and H. Müller, Taschenbuch der Kunststoff-Additive, Carl Hanser Verlag, Kunststoff pp. 101-198 (1983) and in US-A-4,511,596.
• UV absorbers made water-soluble, which e.g. in WO 86/03528, WO 88/00942 and in US-A-4 770 667.
• the compounds of the formulas (VII) and (VIII) can be prepared by methods known per se, e.g. in US-A-3 403 183 and US-A-4 127 586, respectively.
• the compounds of the formula (IX) can be prepared in a manner known per se, for example by the processes described in Helv. 55 , 1566-1595 (1972).
• the dispersed or emulsified light stabilizer can be applied before or during dyeing, discontinuously using a pull-out process at liquor ratios of 1: 5 to 1: 500, preferably 1:10 to 1:50.
• the light stabilizer is expediently added directly to the dyebath.
• the light stabilizers can also be applied continuously by means of low-fleet application systems or hot application systems.
• the amount of light stabilizer added depends on the substrate and the desired stabilization. In general, 0.01 to 10% by weight, preferably 0.05 to 5% by weight, based on the substrate, is used.
• the light stabilizers which can be used according to the invention can be used as such or in the form of their water-soluble salts.
• Suitable salts are those of organic acids, such as carboxylic acids with 1 to 12 carbon atoms, e.g. Formic, vinegar, propionic, butter, valerian, capronic and caprylic acid or of inorganic, polybasic, oxygen-containing acids, such as e.g. Sulfuric acid or orthophosphonic acid.
• the salts of formic or acetic acid are preferred. Salts of compounds of formula (II), wherein R1 is hydrogen or C1-C12 alkyl, are of particular interest.
• oligomeric compounds those with a low molecular weight ( ⁇ 700) are preferred.
• polyamide fiber material is synthetic polyamide that is acid or basic dyeable, such as Polyamide 6, polyamide 6,6 or also polyamide 12 understood.
• fiber mixtures of various polyamide fibers as well as of polyurethane and polyamide are also considered, e.g. Jersey material made of polyamide / polyurethane in a mixing ratio of 70:30.
• Fiber blends made of polypropylene and polyamide are also suitable.
• the pure or mixed polyamide material can be in various processing forms, e.g. as fiber, yarn, woven or knitted fabric.
• the present method is particularly advantageous for the treatment of polyamide material in mixtures with polyurethane or polypropylene which is exposed to light and heat and e.g. available as a car upholstery fabric, carpet or swimwear fabric.
• the coloring takes place in the usual way e.g. with metal complex dyes or also with anthraquinone dyes or azo dyes.
• metal complex dyes or also with anthraquinone dyes or azo dyes.
• the known types in particular the 1: 2 chromium or 1: 2 cobalt complexes of mono- or disazo or azomethine dyes, which are described in large numbers in the literature, are used as metal complex dyes.
• dyes from other dye classes are of course also possible, such as Disperse or vat dyes.
• This material is dyed in an open dyeing machine, for example an ® AHIBA, at a liquor ratio of 1:30. To do this, prepare 2 fleets with each
• the fleet 1 contains no further additives apart from the dyes added later.
• the liquor 2 is still 1.5% of an emulsion consisting of 75% of the compound of the formula (101)
• the two swatches are added to the liquor, treated for a further 10 minutes at 40 ° C., heated to 90 ° C. within 30 minutes and dyeing at this temperature for a further 30 minutes. Finally, cool to 70 ° C, rinse with cold water, centrifuge and dry at 80 ° C.
• compound 101 brings about a marked improvement in the light fastness of the basic-stained PA and a marked inhibition of the tendency to yellowing.
• Example 1 The procedure is as described in Example 1 , with the difference that the compound of the formula 101 is prepared by a 20% dispersion of the compound of the formula (104), prepared by sand grinding with the Na salt of the condensation product of formaldehyde and naphthalenesulfonate in a ratio of 1: 1 , is replaced. If you check the light fastness of these dyeings, you also get a significant improvement in hot light fastness according to Fakra with this product.
• Table I contains the test results: Table I COLORING * LIGHT FASTNESS ** Tear resistant / stretching after 144 h fac HEAT TEST XENON FAKRA 72h 1 6 ⁇ 4 5.3
• the jersey patterns are treated in the liquors a) to d) heated to 50 ° C. for 20 minutes. Then the liquors a) to d) are each added 0.25% of the dye of the formula (111) in dissolved form. After a treatment of 10 minutes at 50 ° C, the dyebath is heated to 95 ° C for 30 minutes. Dye at this temperature for 30 minutes and cool to 70 ° C. The samples are then rinsed cold and dried at 60 ° C.

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• 1990
  • 1990-06-19 EP EP19900810447 patent/EP0409771A3/de not_active Ceased
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  • 1990-06-25 CA CA002019751A patent/CA2019751A1/fr not_active Abandoned
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